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RE: [PATCH 01/10] iommu/ipmmu-vmsa: Remove all unused register definitions
- To: Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
- Date: Tue, 14 Dec 2021 12:05:26 +0000
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- Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>
- Delivery-date: Tue, 14 Dec 2021 12:05:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHX47d4hOj8rE1gDUuIyaw11OIatqwx9SzA
- Thread-topic: [PATCH 01/10] iommu/ipmmu-vmsa: Remove all unused register definitions
Hello Oleksandr-san,
> From: Oleksandr Tyshchenko, Sent: Sunday, November 28, 2021 2:52 AM
>
> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
>
> This is a non-verbatim port of corresponding Linux upsteam commit:
> 77cf983892b2e0d40dc256b784930a9ffaad4fc8
>
> Original commit message:
> commit 77cf983892b2e0d40dc256b784930a9ffaad4fc8
> Author: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> Date: Wed Nov 6 11:35:45 2019 +0900
>
> iommu/ipmmu-vmsa: Remove all unused register definitions
>
> To support different registers memory mapping hardware easily
> in the future, this patch removes all unused register
> definitions.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
>
> **********
>
> This is a prereq work needed to add support for S4 series easily
> in the future.
>
> Although Linux and Xen drivers have a lot in common, the main
> differences are in translation stages (table formats), VMSAv8 modes,
> supported SoC generations, etc, therefore that's why there is
> a slight difference in registers/bits each driver considers unused.
>
> No change in behavior.
>
> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
Thank you for your patch!
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Best regards,
Yoshihiro Shimoda
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